Vacuum testing device for sealed containers



FIG. 1 is a front perspective view of a vacuum testing device for sealed containers showing my new design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevation view thereof. 

The ornamental design for a vacuum testing device for sealed containers, as shown and described. 